[meteorite-list] Park Forest Chondrules and foliation

From: bernd.pauli_at_paulinet.de <bernd.pauli_at_meteoritecentral.com>
Date: Thu Apr 22 10:25:45 2004
Message-ID: <DIIE.0000005C00000ABA_at_paulinet.de>

Pierre wrote:

> You may say I did not find ordinary
> examples, but you will! Pierre

Bonjour Pierre, hi Bob, Steve, Greg, and List,

Here are some examples from my meteorite
collection that show distinct "oval" chondrules:

Julesburg (L3.6) - many oval chondrules
NWA 060 (CK5) - large slightly oval chondrule (diam. 2 mm)
NWA 0527 (L5) - several large white-gray oval chondrules
                               plus one armored oval chondrule
Richfield (LL3.7) - large gray oval RP chondrule (diam. 2 mm)
Rio Limay (L5) - rectangular thin section with deformed, mostly
                             oval chondrules
Gujba (CB3a) - slightly elongated chondrules up to 6 mm in diam.
                            plus several large, oval "metallic" chondrules.

Bob Evans inquired:

> What color are they? My PF's has light green chondrules...sparsely

The chondrules in my 6.5-gram endcut of PF are also sparse and
show a white, slightly grayish color but I wouldn't bet on it because
it (a) depends on the intensity of the light source, and (b) my eyes.

I remember reading in Sky & Telescope that the subtle colors of
celestial objects look different to younger/older observers, and at
the age of 58, I definitely belong to the latter group.

Greg wrote:

> What microscope do you use to view meteoritic specimens?
> I am looking for recommendations for purchase.

I have this Russian MBC-10 stereo microscope that Michael
Blood offers in the United States. For thin section viewing
in polarized light, I purchased Jim Tobin's polarizing adaptor.

Best regards,

Bernd
Received on Mon 26 May 2003 12:57:18 PM PDT